SEAFLO 12V 320CFM 4in Flex Mount Bilge Blower Marine Ventilation

High-volume ventilation for 12V vessels

The SEAFLO SFBB1-320-02 is a 12V DC flex-mount centrifugal bilge blower rated at 320 CFM (approximately 550 m³/h). It moves air through 4-inch marine ducting in engine compartments, bilges, galleys, heads and other enclosed spaces.

The blower is intended for appropriately designed marine ventilation systems where duct length and resistance remain within the unit's capability. Correct ventilation is especially important in petrol-engine and fuel-storage compartments.

Marine blower features

• High-volume 320 CFM / 550 m³/h nominal airflow.
• Flex-mount centrifugal housing for 4-inch ducting.
• Sealed front and rear motor-shaft areas improve moisture protection.
• Corrosion-resistant white ABS construction.
• Ignition-protected motor design.
• Efficient high-output operation for larger compartments and duct runs.
• CE conformity referenced to EN 50014-1 and EN 61000-3-3.

Technical specification

Boat compatibility and installation checks

• For 12V DC boats only; use the corresponding 24V model for a 24V vessel.
• Suitable for motorboats, yachts, fishing craft and workboats with a correctly designed 4-inch ventilation system.
• Confirm airflow direction, mounting space, duct diameter and the 11 A electrical load before replacement.
• Keep ducting short and smooth, avoid crushed sections and sharp bends, and prevent inlet/outlet recirculation.
• Install marine cable, switching and the specified 16 A fuse appropriate to the run and duty.
• Ignition protection does not replace compliance with vessel-builder instructions or applicable ventilation rules.
• Package: one flex-mount blower. Ducting, grilles, switch, fuse and mounting hardware are separate.

Frequently asked questions

Will it work on a 24V boat?

No. This listing is the 12V version.

Does 320 CFM equal airflow through a long duct?

No. Duct length, bends, grilles and restrictions reduce installed airflow.

Is it suitable for a petrol engine compartment?

It is ignition protected, but the complete ventilation layout and operating procedure must comply with the vessel and applicable safety requirements.

Is 4-inch ducting included?

No. The blower is supplied without the external ducting and grilles.